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Power augmentation of combustion turbines with compressed air energy storage and additional expander

a technology of compressed air and expansion expander, which is applied in the direction of machines/engines, mechanical equipment, electric generator control, etc., can solve the problems of significant power degradation of combustion turbines, power loss, and reduced mass of combustion turbines

Inactive Publication Date: 2008-11-06
NAKHAMKIN MICHAEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is well known that combustion turbines have significant power degradation associated with increased ambient temperature or high elevations.
This loss of power is primarily associated with the reduced mass of the combustion turbine's airflow, caused by the reduced inlet air density.
However, the compressed air in the storage typically has a much higher pressure than is needed for the air injection for the power augmentation.

Method used

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  • Power augmentation of combustion turbines with compressed air energy storage and additional expander
  • Power augmentation of combustion turbines with compressed air energy storage and additional expander
  • Power augmentation of combustion turbines with compressed air energy storage and additional expander

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Embodiment Construction

[0016]With reference to FIG. 1, a combustion turbine power generation system with power augmentation, generally indicated as 10, is shown in accordance with an embodiment of the present invention. The system 10 includes a conventional combustion turbine assembly, generally indicated at 11, having a main compressor 12 receiving, at inlet 13, a source of inlet air at ambient temperature and feeding combustors 16 with the compressed air; a main expansion turbine 14 operatively associated with the main compressor 12, with the combustors 16 feeding the main expansion turbine 14, and an electric generator 15 for generating electric power.

[0017]A compressed air storage 18 is provided that is preferably an underground storage structure that stores air that is compressed by at least one auxiliary compressor 20. In the embodiment, the auxiliary compressor 20 is driven by a motor 21, but can be driven by an expander or any other source. The auxiliary compressor 20 charges the storage 18 with c...

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Abstract

A combustion turbine power generation system (10) includes a combustion turbine assembly (11) including a main compressor (12) constructed and arranged to receive ambient inlet air, a main expansion turbine (14) operatively associated with the main compressor, combustors (16) constructed and arranged to receive compressed air from the main compressor and to feed the main expansion turbine, and an electric generator (15) associated with the main expansion turbine for generating electric power. A compressed air storage (18) stores compressed air. A heat exchanger (24) is constructed and arranged to receive a source of heat and to receive compressed air from the storage so as to heat compressed air received from the storage. An air expander (28) is associated with the heat exchanger and is constructed and arranged to expand the heated compressed air to exhausted atmospheric pressure for producing additional electric power via an electric generator associated with the expander and to permit only a portion of airflow expanded by the air expander to be injected, under certain conditions, into the combustion turbine assembly.

Description

[0001]This application is a continuation of U.S. application Ser. No. 12 / 076,689, which is a division of U.S. application Ser. No. 11 / 657,661, filed on Jan. 25, 2007.FIELD OF THE INVENTION[0002]This invention relates to power augmentation of combustion turbine power systems with compressed air energy storage and additional expander; and, more particularly, to augmenting power of the system by expanding heated, high pressure compressed air from a storage for producing additional expander power and extracting airflow from the expander and injecting the extracted airflow into the combustion turbine upstream of combustors for combustion turbine power augmentation.BACKGROUND OF THE INVENTION[0003]It is well known that combustion turbines have significant power degradation associated with increased ambient temperature or high elevations. This loss of power is primarily associated with the reduced mass of the combustion turbine's airflow, caused by the reduced inlet air density.[0004]There...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F02C6/18F02C3/04F02C6/00F02C6/16
CPCF02C6/16F02C6/18F02C7/10Y02E20/16Y02E60/15Y02E60/16
Inventor NAKHAMKIN, MICHAEL
Owner NAKHAMKIN MICHAEL
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